Machine for stitching tape to innersoles.



- F. T. smtisscu. MACHINE FOR s'mcnms TAPE T0 mnsfisolis.

APPLICATION, FILED JUNE 29. IQIB.

{If I Patented May 7,1918.

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U ITED STATES PATENT OFFICE.

5m 1'. B'IBOBEOK, OF BEAGHMONT, MASSACHUSETTS, ASSIGNOB TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

MACHINE FOB STITCHING TAPE TO INNERSOLES.

Specification cf Letters Patent.

Patented May 7, 1918.

Application filed June 28, 1916. Serial No. 106,553.

To all whom it may concern:

Be it known that I, FRANS T. STntinsoK, a

citizen of the United States, residing at Beachmont, in the county of Sufl'olk and State of Massachusetts, have invented certain new and useful Improvements in Machines for Stitching Tape to Innersoles, of which the following is a specification, reference being bad therein to the accompanying drawin s.

Thie mvention relates to sewing machines, more particularly of the flat-bed type, and has for an object the construction of a machine specially fitted for attaching a strip of tape to'the reduced or feathered edge of an innersole to form a stitch-receiving rib for the inseam stitches common to weltcd shoes.

The innersole, the production of which is facilitated by the present improvement, consists of a shaped piece of sheet-material such as fiber-board of which the marginal portion is reduced in thickness to form a feather. Secured to the base of the feather, close to the shoulder formed at the juncture of the feather with the body ortion of the innersole, is a longitudinally olded strip of tape, preferably of rubber-coated canvas material, the securing means consisting of a line of stitches assing substantially through the longitudina center line of the tape. An additional layer of canvas, folded marginally to accommodate the upstanding edges of the tape, is cemented to the innersole and forms, together with the folded tape, a reinforced lip adapted to receive the Well-known inseam stitches. Inasmuch as the stitches which hold the tape in place are set below the surface of the innersole, there is no danger of their being broken or punctured by the and and needle of the welting machine.

In stitching the tape to an innersole, as above described, it is desirable that the tape be folded into trough-like form, prior to its presentation to the needle, so that the stitches may draw the tape snugly into the grooved or reduced portion of the innersole. It is also desirable that. the tape be free from the retarding and flattening action of pressure exerting surfaces, common to strip ides of the prior art, which would serious y interfere with the feeding of the tape, particularly if rubber coated, and would render it exceedingl difficult to stitch the tape to position whi e rounding the toe.

The present improvement, in its preferred embodiment, makes use of a lock-stitch ma chine having a frame including a bed-plate and the usual overhanging bracket-arm and head in which is journaled a reciprocating needle-bar carrying a straight needle and the usual spring-pressed presser-bar carrying a rollerresser disposed at the side of the needle and cooperating as usual with a feed dog. In combination with the above instrumcntalitics, I employ ta pc and work-guidin ineans especially constructed and arrange to assist in properly posit ioning the tape and inncrsole relatively to each other and to the stitching point.

The tupe-guiding means preferably consists of a folder-guide which is formed with a short guiding channel of U-shapcd crosssection. inclined downwardly toward the stitching point. The delivering end of the guiding channel is disposed close to and directly in front of the needle-path and is so til'i'iti'igfid that the needle will stitch preferably through substnntially the center line of tape. A guide preferably in the form of a fin is, in the present. instance, rigidly sccured to the lower convex side of the folderguide and projects downwardly a short distance to form an edge-guide for the innersole. The folder-guide may conveniently be sustained by a laterally bowed shank adjnstably secured to the head of the machine. An auxiliary guide is preferably provided for keeping the tape from coming in contact with the rollerresser in its passage to the folder-guide.

A fuller understanding of the invention may be had from the detailed description and the accompanying drawings in which Figure 1 is a front elevation of the folder guide and the instrumentalities coiiperating therewith. Fig. 2 is a side elevation of the same. Fig. 3 is a rear elevation. Fig. 4 is a plan view. complete innersole, the production of which. the present improvement. is constructed to facilitate.

In the present instance, I preferably *to accommodate the utilize a machine having a frame com rising a flatbed 1 and throat-plate 2 a ove which is positioned the usual overhanging head 3 in which is journaled the needlebar 4 carrying the eye-pointed needle 5 which cooperates with the usual loo -taker to form stitches. The presserar 6, mounted in the head 3 and pressed downwardly hy'the usual spring (not shown), carries at its lower end a bracket 7 formed with laterally projecting spaced ears 8, 8, in which are threaded opposed pointed screws 9, 9, which enter corresponding depressions at the upper end of a downwardly and forwardly extending bar 10 carrying at its free end a screw-pin 11 on which the resser-wheel 12 is journuled in opposed relation to a feed-dog 13 which rises through a slot in the throat-plate at one side of the needle-hole 14. The spring 7 mounted on the bracket 7 acts to yieldingly maintain the adjustable stop-screw 10 which is carried by the bar 10, in contact with the shoulder '7. The bar 10 may, when desired, be turned about the pivot screw 9 to displace the presser-Wheel from operative position.

The folder-guide 1.3 is preferably carried at the lower free end of n laterally bowed shank 16 whose upper end is provided with vertically elongated slots l7, 17, entered by screws 18, 18 which are threaded into the lower cnd-portion of the head 3. The faceplate 3 is cut away, as shown in Fig. 1, shank 16 and screw 18, 18. The body of the foldcr guide 15 is, in the present embodiment of the invention, constructed from :1 piece of sheet-metal bent to U-forrn end having the upper edgeportions 19 turned inwardly sud downwerdly, into substantial parallelism with their outer side walls, respectively, thus forming a short guiding channel which is U-shaped in crossscction. The guide 15 is preferably inclined downwardly toward the stitching point and its-delivering end is preferably disposed directly in front of the needle path so that the needle will stitch through substantially the center line of the tape, as best shown in Figs. 2 and 4.

It is usually desirable to provide a guide for the innersole so that the stitches may be accurately placed as desired in the grooved or reduced portion adjacent the edge of the innersole. For this purpose I prefer to emplo r e triangieshapcd, vertically disposed in 20, which is ri idly secured to the lower convex side of the folder-guide and projects downwardly a short distance terminating in a blunt horizontal edge 21 which is spaced from the throat-plate a distance equal to, or slightly renter than, the thickness of the feather. his spacing of"'the guide-fin above the throat-plate may be'veried by adjusting the shank 16 vertically. The guide-fin 20 has the active'work-guiding surface 20', Fig. 1, which extends downwardly away from the lower curved portion of the folder-guide 15, in a direction substantially normal thereto, and serves in the present instance to position the shoulder of the innersole so that the needle 5 will just miss it. The guide-fin also acts as a stripper, to assist the presser-wheel in strippin the innersole from the rising needle, and orms an abutment against which the usual take-up (not shown) may set the stitches.

An auxiliary tape-guide, of a bent arm 22, secured by screws to the faceplate 3' and constructed with a. guiding slot 23, is preferably provided to lead the tape from t e source of supply to the folderguide and keep the tape from coming in contact with the presser-wheel.

posed above and at the side of the folderguide remote from the presser-wheel, as shown in Fig. 1.

In the operation of the device an innersole havim the body portion a and the reduced or tcathered portion 6 is placed on the throat-plate with the shoulder 0 against the active surfece 20 of the guide-fin 20 after which the presser-wheel 12 is lowered and acts to yicldingly hold the body .portion a in position to be engaged and fed by theQl'eed-dog 13. The tape d, folded into U-form by the folder-guide 15, is presented to the needle 5 which stitches through the center line of the tape and the portion 6 of the innersole which is reduced in thickness, thus sharpening the line of fold and drawing it snugly against said reduced ortion and, in the embodiment shown in s. 2 and 4, into the angle at the base of t e feather. stitches 6 below the surface of the portion a.

It will be noted that I have avoided the use of pressure-exerting surfaces which in prior tape-guide constructions have commonly been brought to bear upon the stitched tape. Such surfaces in the resent instance would greatly impede the ceding of the work if a rubber coated tape were used and would flatcn the tape, rendering it diflicult to stitch the tape around the sharp curve at the toe of the innersole, where the two upstanding halves of the tape-strip have a strong tendency to be drawn into intimate contact with each other, due to the fact that the tape is folded longitudinally and is then curved about the toe.

While I have shown and described what ody having the form For this latter purpose the auxiliary guide is dis This action results in setting\ the I consider to be the preferred embodiment is to be understood that needle being menace tape to the needle in the form of an u wardl opening trough, whereby the nee e may descend into the trough.-

2. In a sewing machine, in combination, stitch-formin mechanism ncluding a reciprocating straight needle, a substantiallyiflat work-supportmg (plate, feeding mechanism including a fee og adapted to engage the work through an aperture in said wor -sup-' porting plate, and tape-guidin means disposed above said plate and inc uding guiding surfaces constructed and arranged to present a strip of tape to the needle in the form of an upwardly opening trough, said adapted to enter the trough. In a sewing machine,

in combination, stitch-forming mechanism including a reciprocatlng needle,

a Work-sup)port, a feeding im lement, a presser-mem er opposed to sai feeding-im lament and acting at one side of the line 0 stitching, and a tape-guide having a U-shaped channel ada ted to deliver tape to the needle in tron -like form at one side of said presser-mem er, whereby the stitched tape is free from the action of pressure exerting surfaces.

In a sewing machine, in combination, stitch-formin mechanism including a reciprocating neetfie, a work-su port, a feeding implement, a. presser-mem er opposed to said feeding implement and acting at one side of the line of stitching, a tape-guide having a channel adapted to deliver tape to the needle at one side of said presser member, whereby the stitched the action of the pressure exertin surfaces, and work-guiding means disposed between said tape-guiding channel and said worksupport.

5. In a sewing machine, in combination, stitch-forming mechanism including a reciprocating needle, :1 work-support, a folderguide, comprising a body portion, having a tapeiding channel whose delivering end is su stantially U-shaped in cross-section, said delivering end being so disposed adja); cent the needle path that the stitches are received in the fold of the stri of ta e as it issues from said folder-gui e, and

tape is free from a work-support,

being so disposed" adjacent the needle-path as to present the ,a position spaced workguiding means disposed between said body portion and said work-support.

6. In a sewing machine, in combination, stitch-formi mechanism including a reciprocating nee e, a work-support, a folderguide comprising a bod portion, having a tape idi channel w oae delivering and is su stantlally U-sha ed in cross-section, said delivering end being so disposed adjacent the needle path that the stitches are received in the fo d of the strip of ta e as it issues from said folder-gui e, an workguiding means carried by said tape-guide and disposed between said body portion and said work-en port. 1

7. A combined tape and work-guide for sewing machines comprising, in combination, a member having a tape-guiding chapnel whose delivering end is substantial U-shaped in crosssection and a work-flail ing portion, said work-guidin portion a ving a work-guiding surface is osed adjacent the delivering end of said o and and extending away from the curved portion of said channel.

8. In a sewing machine, in combination, stitch-formin mechanism including a reciprocal-in needle, a feiedin im ienggnla a wor ate,atapei ea usta y "e in 531m the surface 0 said worklate and having a substanti U shape tape-guiding channel arran deliver tape to the stitching pain and a Presser member having a pressure exerting surface disposed wholly at.the side of the stitching line and opposed to said feeding imgalement. w

In a sewing machine, in combination, a frame including a flat-bed late and an overhanging bracket-arm, stitch-formm mechanism including a reciprocatin n e journaled in the free end of said racketarm, a guide-member rigidly sustained by said" bracket-arm and rovilieil with a tapeguidin channel of sha cross-section whose elivering end is disposed directly in front of the needle-path, id U-shaped channel being convexed to plate, a rollerresser dispos one side of saidguideer and the line, and an aux iary tap'eide stitching dispose on the op osite ad line and above t e firstmember. 11

In testimony whereof I Pave signed my name to this specification.

FRANS T. smbiinox, 1. a l

WitnfssewF M om: 02ers,

win.

of the stitc ing ntioned; guide- Fnanniuox W. M0 

